Loom.



F. D. RAYMOND.

LOOM.

APPLICATION FILED NOV. 28, 1914.

1 ,1 52,905. Patented Sept. 7, 1915 Il 1 i g L FIG. 1.

WITNFSS/ m INVENTOIR 'F ANcow D RAYMOND.

ATTORNEY.

" anism, 1

Parana caries.

FRANCOIS D. RAYMOND, F FALL RIVER, MASSACHUSETTS.

LOOM.

To all whom it may concern:

Be it known that I, FRANCOIS D. RAY- MOND, a subject of George V, King of Great Britain, residing at Fall River, county of Bristol, Commonwealth of Massachusetts,

have invented certainv new and useful Improveinents in Looms, of which the followis a specification. r

v This invention relates to weaving an particularly to a warp change mechanism for a loom.

My present invention contemplates the simultaneous removal of the warp rest and its :S'stop motion detectors from the warp'stopmotion frame when it is desired to substijitute'a new warp or to temporarily lay aside Qthe warp in the 100m. This has been heretofore attempted but the detectors or wires are liable to become mixed or crossed and it has been necessary to carefully tie thesets to prevent crossing or breaking the war My invention has made a very consi erable saving in the time of the loom tender as well as relieving the loom fixer and also a saving of material and labor in damaged warps and spoiled cloth.

My warp change mechanism may be adapted for use with either mechanical or electrical stop motions. For the purposes of the patent however, I have shown it in connection with a conventional mechanical stop motion of the type wherein the detectors are thin flat metallic strips or wires having closed slots for the reception of the supporting bars. .j

The construction and operation of my de;

Specification of Letters Patent.

Patented Sept. 7, 1915.

Application filed November 28, 1914. Serial N 0. 874,539.

the lines 2-2 and 33 respectively of Fig. 1, and Fig. 4 is an end elevation.

In order to make my device applicable to almost-any of the standard looms now in use I provide end castings 7 which may be adjustably mounted on the frame, Each end casting has a socket 8 with set screws 9 providing for an adjustable mounting on brackets or rods as 10 secured to some fixed part of the loom.

Each casting 7 has a recess 7 upon its inner face to receive the end plates 11 of the warp change. Adjacent the lower ends of these recesses the castings 7 have each a pair of lugs to which are rigidly secured a pair of parallel bars 12 providing the back stops. Journaled in the lower ends of the castlngs and in an intermediate bearing de-.

pending fron-rthe back stops in the form of a yoke 13 is a rock shaft 14 having arms 15 to which is secured afeeler blade 16 which oscillates between the back stop bars 12 and is limited in its movements by the curved'sides of the yoke 13. Beyond the end casting 7 at the right (Fig. 1) the rock shaft 14 has a rocker arm 16 adapted for contact bysome moving part of the loom whereby to oscillatetherock shaft .14; against the tension of its spring 17. The spring 17 is fastened at one end to the opposite end of the rock shaft beyond the casting 7 at the left (Fig. 1) and at its other end to an eye on the outer face of said casting. Thespring returns therock shaft to initial position after each ,actuation thereof.

The warp change is inthe form of a pluvice will be more fully disclosediin the krality of bars mounted in the end plates 11 Specification that follows and in the drawings forming a part of that specification I have shown as an illustrative embodiment awarp change which not only clearly illus trates my invention but is in itself a form proven to be satisfactory in practice and well adapted to manufacture.

Throughout specification and drawings like reference numerals are correspondingly applied and in these drawings, Figure 1 is a front elevation of my warp change mech: igs. 2 and 3 are detail sections on which have been referred to herinabove as being removably rece ved in the recesses of the casting 7. In the drawings, I have,

shown these bars as being five in number, although this number may obviously be varied. The three lower bars 18 constitute the Warp rests over which the warp threads are drawn and kept separated by the sets of wires 20 in which the warps havebeen threaded. The two upper bars 19 constitute 1 the supports for the banks or series of gravitydetectors or Wires 20. These detecas indicated at 33 which isreceived 1n a recess forked end 40 of a top tors may conveniently be in the form of thin flat metallic strips having closed slots 21 for the reception of the guiding and supporting bars 19 and warp eyes 22 for the reception of the warp threads.

The warp change frame with its detectors is bodily removable from the warp stop motion frame by simply releasing a latching device which normally loom. This latching device consists of a pair of slotted attaching members 23 adjustably held to the back stop rods 12 by screws 24. The members 23 have each spaced ears connec ed by pins 25 on which is rigidly mounted a cross piece 26. The cross piece 26 isslotted in the direction of length of the Warp rest bars 18 to receive the bottom edges ofsaid bars. The slotting of the cross piece provides a plurality of upright lugs 27 between which the warp rest bars 18 loosely lie.

Pivoted on one of the pins 25 is a link 28 having a laterally projecting swiveled ear 29 in which is swiveled the stud of a locking niece 30; When the piece position, it is disposed across the warp change between the bars 18 and 19. The bottom edge of the cross piece 30 is slotted as indicated at 31 at points opposite the slots of the cross piece 26 to receive the upper edges of the warp rest bars 18. The upper edge of the cross piece 30 is slotted 32 to receive the bottom edges bars 19. The projecting lug 34: in a cooperatin keeper member 35 pivoted on the pin 25 o the opposite attaching member 23 of the latching device.

The keeper 35 has an inwardly projecting lug 36 provided with a toe piece 37 which cooperates-with one of the upright spacing lugs formed by the slots32 of the cross piece 30 to lock one of the detector bars 19. The keeper member 35 alsohas a threaded stem 38 on which a thumb nut 39 is threaded.

The thumb nut 39 cooperates with the latch piece 41 pivoted to the free end oithelink 28 This latch piece is slotted along its bottom edge of the detector sup ortin cross piece 30 has a ateral y as indicated at- 12 opposite to the slots of the cross piece 30 to engage the upper 1 1 "of the detector bars 19.

- In use, the warp change is filled and inserted in the recesses of the castings 7 and locked therein by the latching device. When a warp thread breaks or developsan undue slackness, it's detector drops and contacts the feeler blade which through suitiable stop mechanism (not shown) stops the OOIl'l.

When all the warp threads in the stop motion frame have been woven, the warp change is removed by unlatching the keeper locks it in the 30 is in locking a plurality of kept in their proper place and the drawing in of the new warp quickly and correctly a done without danger of mistake or mishap. Various modifications in the form and construction of my. device may obviously be resorted to within the limits of the appended claims.

" What I therefore claim and desire to se cure by Letters Patent is 1. In a warp stop motion,

a frame, a warp change mechanism removably mounted 111- said f'rame and including a pair of spaced warp rest bars and a detector bar, and a latching device for removably locking saidwar frame and inclu ing a fixed latch piece having engagement with said warp rest bars, a swiveled latch piece having engagement with said warp rest bars tector supporting bar, able member havin engagement with said detector supporting er, and means for looking said pivoted member.

2. A latching device for removably lock ing the warp rest and detector supporting bars of a warp stop motion for a loom, comprising a air of attaching members, a cross piece fixe to said members and having engagement with the lower edges of the warp rest bars, a ppir of lateral members pivoted to said attac ing members, a latch me'mber swiveled to one of said lateral members and disposed for engagement with both the warp rest and the detector supporting bars, and a latch member pivoted to one 0 said lateral members, above the swiveled member and disposed for engagement with said detector supporting bars and for locking engagement with the coiiperating pivoted lateral member.

3. A latching device for removably locking the warp rest anddetector supporting bars of a warp stop motion for a loom, comprising a pair of adjustable attaching members, a cross piece disposed transversely of the bars and having locking projections disposed for engagement with the lower edges of the warp rest bars, a' pairot lateral me bers pivoted to said attaching members, a atch member swiveled to one of said lateral memhers and disposed for engagement with the upper edges of the warp rest bars and the lower edges of the detector supporting bars. and a latch member pivoted to the free end of one of said detector supporting bars and for looking onand with said deand a pivoted lock fixed to said members and supporting change mechanism in midi lateral members and dis osed v for engagement with the upper edges 0 said' said Warp rest bars said detector bars,

members and in its frame comprising a pair of vertical members, a member connecting said vertical members, a member swiveled to one of said vertical members, and a latch member pivoted to one of said vertical members, and means for lockin said pivoted member.

6. A latching evice for remoirably locking the warp change mechanism of -a loom in its frame comprising a pair of verticai members, a horizontal member rigidly con-- necting said vertical members, a laterally swingable member, and a vertically swingable member, and means for locking said vertically swingable member.

7. A latching device for removably locking the warp change mechanism of a loom in its frame comprising a pair of vertical pivoted members, a horizontal member rigidly connecting said vertical members, a laterally swingable member swiveled to one of said vertical members, and a vertically swingable member pivoted to one of said verticahmembers and adapted for locking logngagement with the opposite vertical mem- 8. In a warp stop motion, change mechanism therein and including a pair of spaced warp restbars and a superimposed detector bar, and a latching device including a pair of members disposed on opposite sides of said warp change, a member connecting said pair of members and engaging said Warp rest bars, a swingable member pivoted to one of said pair of members and disposed between said warp rest and detector bars and a pivoted latch member engaging said detector bars, and means for locking said latch member.

9. In a warp stopmotion, a frame, a warp change mechanism removably mounted therein andincluding spaced warp rest bars and detector bars, and a latching device including a pair of vertical members disposed on opposite sides of said warp change, a member rigidly connecting said vertical members and engaging the under sides of said warp rest bars, a laterally swingablo member swiveled to one of said vertical members and engaging the upper sides of and the under sides of a. vertically swingable a frame, a warp latch member pivoted to said vertical mempermitting partial turning removably mounted and a latching device including a ber above said laterally swingable member and engaging said detector bars on their upper sides, andmeans associated with said opposite vertical member for locking said latch member. v

10. In a warp change mechanism, a warp change removably mounted therein, and a latching device comprising a pair of pivoted vertical members, a swingable member pivoted'to one of said a frame,

and a second swingable member pivoted to one of said vertical members and engaging another part .of the warp change.

11. In a warp change mechanism, a frame, a warp change mechanism therein, and a latching device including a pair of members pivoted to swing away from said warp change in opposite directions, a member engaging a part of said warp'change and to which said pair of members are pivoted, a

vertical members and engaging a part of said warp change member swingably connected to one of said pivoted members and engaging a part of said warp change, and means for locking said pivoted members in latching position.

12. In a warp change mechanism, a frame, a warp change mechanism therein, and a latching device including a pair of members pivoted to swing away from Said warp change in opposite directions, a member engaging a part of said warp change and to which said pair of members are pivoted, a member disposed for engagement with a part of said warp change and having a conncction with one of said pivoted members movement thereof about a horizontal axis and moving with said pivoted member in the swinging movements thereof. and means for locking said pivoted members in latching position.

13. In a warp change mechanism, a frame, a warp change mechanism therein, and a latching device including 'a pair of members pivoted to swing away from said warp change in opposite directions. a rigid member engaging a part of said warp change and to the opposite ends of which said pair of members are pivoted, a latch member pivoted tothe free end of one of said opposed members, and means for locking said latch member in latching position.

14;. In a warp change mechanism,

a frame, a warp change removably mounted thereon, pair of. opposed members, one pivotally connected with said frame, a member having a connection with said pivoted member permitting movement therewith and capable of independent movement relative to said pivoted member and'disposed for engagement with said warp change, and means for holding change. I

15. In a warp change mechan sm, a frame,

said member in engagement with said warp 1 member pivoted'to said rigid member, a

' member myable with said pivoted member haring a connection with said member pet; 'ttmg turning movement thereof about ii. "horizontal axis, said last named member sivmgable transversely across the warp change to lie in spaced relation to said rigid 19 -member, and means for'holding the swingable member in said relation.

In testimony whereof I afiix my signature in presence of two Witnesses.

' FRANCOIS D. RAYMOND.

Witnesses:

ARTHUR C. DANAis, OLIYA J. PREVOST. 

